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Battery life discharge rate

Discussion in 'Electronic Basics' started by Christopher, Jun 11, 2006.

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  1. Christopher

    Christopher Guest

    Hello Everyone,

    I made a semi-passive filter circuit that uses one 1.5 volt AA cell
    with a constant drain of one milli-amp. If the 1.5v AA cell remained
    above 1.1 volts for a year I won't bother using a on/off switch.

    Will a AA last a year?

    Are the Alkaline cells better in the long term than Heavy Duty AA?

    Is the decay rate of a manufacturer's cells "honestly" documented some
    where?

    Thank you,

    * * *
    Christopher

    Temecula CA.USA
    http://www.oldtemecula.com
     
  2. ehsjr

    ehsjr Guest

    Nope. Battery capacity for an alkaline AA is about 2850 maH
    http://data.energizer.com/SearchResult.aspx
    At 1ma, it will last a whole lot longer than 2850 hours, but
    there are 8760 hours in a year.

    Check the url, make your own decision. Cost may come into
    the equation!
    You mean self-discharge or shelf life figures?
    Probably irrelevant in any event - these small batteries
    are use & toss, so you keep extras on hand.

    Ed
     
  3. Jasen Betts

    Jasen Betts Guest

    more like 3 to 6 months. with a D cell you could get a year.
    the use-by date is some indication.

    Bye.
    Jasen
     
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